Add 12/20 and 42/30
1st number: 12/20, 2nd number: 1 12/30
12/20 + 42/30 is 2/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
12/20 = 12 × 3/20 × 3 = 36/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
42/30 = 42 × 2/30 × 2 = 84/60 - Add the two like fractions:
36/60 + 84/60 = 36 + 84/60 = 120/60 - 120/60 simplified gives 2/1
- So, 12/20 + 42/30 = 2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/20+42/30 12/20+84/30 12/40+42/30 12/20+42/60 36/20+42/30 12/60+42/30 12/20+42/90 60/20+42/30 84/20+42/30